Sanitary vent and drain box



(No Model.) 2 Sheets-Sheet 1.

E. HAYWARD. SANITARY VENT AND DRAIN BOX.

No. 543,961. PatentedAug. 6, 1895.

(No Model.) 2 Sheets-Sheet 2.

E. HAYWARD.

SANITARY VENT AND DRAIN BOX. Elm-543,961. Patented Aug. 6, 1895.

eff/ 6. I 3.

- V I IEZZVENTOH UNITED STATES PATE T ()FFICE.

EDWIN HAYWARD, OF BROOKLYN, NEW YORK.

' SANITARY VENT AND DRAIN BOX.

SPECIFICATION forming part of Letters Patent No. 543,961, dated August6, 1895.

- Application filed September 21, 139% Serial No. 523,698. (No model.)

New York, have invented certain new and useful Improvements in SanitaryVent and Drain Boxes, of which the following is a specification.

The object of the present invention is to construct a cheap, simple, andefficient sanitary vent-box, and especially as an improve-- ment in thefresh-airsinlet box, as it is termed, which is connected with thesewerpipe at a point between the intercepting-trap I5 and the waste andsoil pipes for sewers,

drains, and cesspools; and the principal fea- .tures relate to theconstruction of the box, so that all accretions of dirt or foreignsubstances can be readily removed, and also to provide a means wherebypositive ventilation will at all times be assured, although the box maybe filled with accumulations. V

Referring to the accompanying drawings,

Figure l is vertical sectional view of a sidewalk and street, showingthe vent-box connected withthe sewer. Fig. 2 is a vertical longitudinalsection of a vent-box; Fig. 3, a top view of the lid or cover o f thebox; Fig. at, a perspective view of the exterior construction of theremovable grid of the vent-box;

Fig. 5, a perspective view of the interior of the removable grid; Fig.6, a vertical longitudinal section of a vent-box, showing modified formof the removable grid; Fig. 7, a side 5 elevation of a building, showinghouse connection and location of vent-box and freshair pipe; Fig. 8, aside view of the complete box, and Fig. 9 an end view of same.

It is of theutmost importance that the ventbox connected with theair-tube should always be kept open and positively free to admit freshair or to remove foul gases from the sewerpipe wherever houses areconnected directly with the sewer and the fresh-air inlet must 5necessarily be'located in the sidewalk.

In Fig. 7 I show a side elevation which illustrates the form of use mostcalled for in large cities, wherein I is the sewer-pipe; II, thesoilpipe; III, the waste-pipe, and IV the trap in the sewer-pipe.

In constructing my invention I prefer to use a vent-box A, provided withan ordinarycovered grating B, held in place by means of bolts 0 orotherwise. Achannel D is formed in the base, terminating at one end in atube E, to which the vent-pipe F from the sewer or sewer-pipe isconnected. A vertical channel D is also formed at one end,the lower endof which terminates at the tube E. IVithin the box thus constructed Iplace an L-shaped removable grid composed of a vertically-disposedportion G. The upper end is sloping, as

shown, and the sides and top of this part of the grid are provided withsuitable openings orgratings, as shown. The horizontal part J of thegrid is preferably cast with the vertical part, or it may be separableand attached thereto, and its rear endrests against a lug K, which iscast with or secured to the bottom of the box.

The sides and top of the horizontal portion J are also grated, and itwill be observed that it entirely covers the channel D of the box andthat the vertical limb of the grid covers the vertical channel D, sothat the gases which enter the channel from the vent-pipe F will pass upinto the box and all moisture Within the box will find its way down intothe channelD and thence to the sewer-pipe or sewer, and the connectingvent or drain pipe guarded against obstruction.

As these boxes are located at the edges of the sidewalk or at suchplaces as are liable to receive dirt, the vent-pipe becomes clogged andit is difficult to remove the deposits, while at the same time anydeposition of solid matter, even though ordinarily grated, will preventthe gases from escaping and fresh air from entering, it is desirable toso arrange the grid that it will serve as a vent, even though the boxshould be filled with matter. This is accomplished by the grating M atthe upper end of the vertical portion G, through which the sewer-gas canescape in case the bar is filled with accretions.

I do not confine myself to any special form of grid and I illustrate amodified structure in Fig. 6,in whichit is shown in the form of avertical cylinder N, provided with grated sides and open top and havingprojecting lugs at the base, which pass under and are held by cleatssecured to the bottom of the box, or by simply allowing the cylinder torest on the bottom over the open-mouthed channel. In

either case I make the grid removable to permit the box and channel tobe cleaned.

It is desirable to have the vent-pipe connection to vent-box broughtclose to the top to prevent dust and sweepings of sidewalk from chokingthe pipe.

If the connection of vent-pipe to box were made at the top and outside,the pipe would be an obstruction to the fitting of heavy pav' ing neatlyaround the box.

The inside movable part forming the channel grid is designed as acontinuation of the vent-pipe entering at the bottom of box. It is madeto drop into and set loose in place that it may be readily removed toclean the connecting-vent, which, being a straight pipe, is easily donewithout disturbing box or pavement or cutting of pipe.

If pipe were brought up to top of box at outside, it would be necessaryto use a bend in connection with it to carry the pipe down verticallyaway from pavement and another to give the pipe required horizontaldirection. This turn would present'a difficulty in clearing ofobstructions, which is obviated by the method of bringing the vent totop of box at the inside, as described.

It will be observed that the grating B, directly above the cylinder N,is cast without openings, as shown at L, so that dirt and other 1foreign substances will not fall into the cylinder.

What I claim as new is 1. A vent box provided with a horizontal channelin its base and a vertical channel in one end, having within an L-shapedvent and drain grid covering said channels, the vertical portion thereofhaving gratings on its sides and top, and the horizontal portion havinggratings on the top and sides, substantially as set forth.

2. A vent box, provided with a horizontal channel in its base and avertical channel in one end, having within a removable L-shaped vent anddrain grid, adapted to cover said channels, substantially as herein setforth.

3. A vent box having a horizontal channel in its base, and a verticalchannel in one of the end walls, said channels terminating in a pipe,and an L-shaped grid within said box, covering said channels,substantially as set forth.

4. A vent box having a channel in the bottom and in one of the end wallswhich channels terminate in a pipe, in combination with a removable Lshaped grid, the horizontal portion of which covers the channel in the 5bottom, and the vertical portion covering the channel in the end wallhaving gratings at 1 its upper end, substantially as set forth.

5. A vent box having in the bottom a channel, and at one end a verticalchannel both uniting at a drain or vent pipe in combination with aremovable L shaped grid, covering said channels substantially as setforth.

Signed at Brooklyn, in the county of Kings 1 and State of New York, this22d clay of August, A. D. 189a.

EDWIN HAYWARD. Witnesses:

F. L. BROWN, GEORGE W. WooLLEY.

